./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 172ac4fa0310d14c59d9149bc1b8ec1548860e0b827250d611bfd9d710019753 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 18:58:14,423 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 18:58:14,424 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 18:58:14,446 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 18:58:14,446 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 18:58:14,447 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 18:58:14,448 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 18:58:14,450 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 18:58:14,452 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 18:58:14,452 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 18:58:14,453 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 18:58:14,454 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 18:58:14,455 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 18:58:14,456 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 18:58:14,457 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 18:58:14,458 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 18:58:14,459 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 18:58:14,459 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 18:58:14,461 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 18:58:14,463 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 18:58:14,464 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 18:58:14,465 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 18:58:14,466 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 18:58:14,467 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 18:58:14,469 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 18:58:14,469 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 18:58:14,470 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 18:58:14,471 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 18:58:14,471 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 18:58:14,472 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 18:58:14,472 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 18:58:14,473 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 18:58:14,473 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 18:58:14,474 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 18:58:14,475 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 18:58:14,475 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 18:58:14,475 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 18:58:14,475 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 18:58:14,476 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 18:58:14,476 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 18:58:14,477 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 18:58:14,477 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-12-06 18:58:14,494 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 18:58:14,494 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 18:58:14,495 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 18:58:14,495 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 18:58:14,495 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 18:58:14,496 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 18:58:14,496 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 18:58:14,496 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 18:58:14,496 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 18:58:14,497 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 18:58:14,497 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 18:58:14,497 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 18:58:14,497 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 18:58:14,497 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 18:58:14,497 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 18:58:14,497 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 18:58:14,497 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-06 18:58:14,498 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 18:58:14,498 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 18:58:14,498 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 18:58:14,498 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 18:58:14,498 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 18:58:14,498 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 18:58:14,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:58:14,498 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 18:58:14,499 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 18:58:14,499 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 18:58:14,499 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 18:58:14,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 18:58:14,499 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 18:58:14,499 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 18:58:14,499 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 172ac4fa0310d14c59d9149bc1b8ec1548860e0b827250d611bfd9d710019753 [2021-12-06 18:58:14,711 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 18:58:14,727 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 18:58:14,729 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 18:58:14,730 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 18:58:14,730 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 18:58:14,731 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.c [2021-12-06 18:58:14,776 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/data/ac2521883/5b8a79a1b08c4719a9b7924383eda9fc/FLAGb0b1f78b6 [2021-12-06 18:58:15,188 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 18:58:15,189 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.c [2021-12-06 18:58:15,194 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/data/ac2521883/5b8a79a1b08c4719a9b7924383eda9fc/FLAGb0b1f78b6 [2021-12-06 18:58:15,207 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/data/ac2521883/5b8a79a1b08c4719a9b7924383eda9fc [2021-12-06 18:58:15,209 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 18:58:15,210 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 18:58:15,212 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 18:58:15,212 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 18:58:15,215 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 18:58:15,215 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:58:15" (1/1) ... [2021-12-06 18:58:15,216 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@410e288e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:58:15, skipping insertion in model container [2021-12-06 18:58:15,216 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:58:15" (1/1) ... [2021-12-06 18:58:15,221 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 18:58:15,230 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 18:58:15,321 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:58:15,323 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 18:58:15,333 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:58:15,341 INFO L208 MainTranslator]: Completed translation [2021-12-06 18:58:15,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:58:15 WrapperNode [2021-12-06 18:58:15,341 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 18:58:15,342 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 18:58:15,342 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 18:58:15,342 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 18:58:15,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:58:15" (1/1) ... [2021-12-06 18:58:15,351 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:58:15" (1/1) ... [2021-12-06 18:58:15,363 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2021-12-06 18:58:15,363 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 18:58:15,364 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 18:58:15,364 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 18:58:15,364 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 18:58:15,370 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:58:15" (1/1) ... [2021-12-06 18:58:15,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:58:15" (1/1) ... [2021-12-06 18:58:15,370 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:58:15" (1/1) ... [2021-12-06 18:58:15,370 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:58:15" (1/1) ... [2021-12-06 18:58:15,372 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:58:15" (1/1) ... [2021-12-06 18:58:15,374 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:58:15" (1/1) ... [2021-12-06 18:58:15,375 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:58:15" (1/1) ... [2021-12-06 18:58:15,376 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 18:58:15,377 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 18:58:15,377 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 18:58:15,377 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 18:58:15,377 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:58:15" (1/1) ... [2021-12-06 18:58:15,384 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:58:15,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:58:15,405 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 18:58:15,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 18:58:15,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 18:58:15,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 18:58:15,494 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 18:58:15,496 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 18:58:15,561 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 18:58:15,566 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 18:58:15,566 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-06 18:58:15,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:58:15 BoogieIcfgContainer [2021-12-06 18:58:15,568 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 18:58:15,569 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 18:58:15,570 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 18:58:15,572 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 18:58:15,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 06:58:15" (1/3) ... [2021-12-06 18:58:15,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a8b5591 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:58:15, skipping insertion in model container [2021-12-06 18:58:15,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:58:15" (2/3) ... [2021-12-06 18:58:15,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a8b5591 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:58:15, skipping insertion in model container [2021-12-06 18:58:15,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:58:15" (3/3) ... [2021-12-06 18:58:15,575 INFO L111 eAbstractionObserver]: Analyzing ICFG BrockschmidtCookFuhs-CAV2013-Fig9a.c [2021-12-06 18:58:15,579 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 18:58:15,580 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-12-06 18:58:15,617 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 18:58:15,623 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 18:58:15,623 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-06 18:58:15,634 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.75) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:15,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-06 18:58:15,638 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:58:15,638 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-06 18:58:15,639 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-06 18:58:15,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:58:15,643 INFO L85 PathProgramCache]: Analyzing trace with hash 889513814, now seen corresponding path program 1 times [2021-12-06 18:58:15,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:58:15,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410115262] [2021-12-06 18:58:15,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:15,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:58:15,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:15,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:58:15,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:58:15,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410115262] [2021-12-06 18:58:15,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410115262] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:58:15,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:58:15,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:58:15,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656578823] [2021-12-06 18:58:15,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:58:15,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:58:15,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:58:15,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:58:15,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:58:15,791 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.75) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:15,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:58:15,838 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2021-12-06 18:58:15,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:58:15,840 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-06 18:58:15,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:58:15,845 INFO L225 Difference]: With dead ends: 35 [2021-12-06 18:58:15,846 INFO L226 Difference]: Without dead ends: 13 [2021-12-06 18:58:15,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:58:15,851 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 17 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:58:15,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 23 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:58:15,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-12-06 18:58:15,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-12-06 18:58:15,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 10 states have (on average 1.4) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:15,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2021-12-06 18:58:15,875 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 6 [2021-12-06 18:58:15,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:58:15,875 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-12-06 18:58:15,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:15,876 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2021-12-06 18:58:15,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-06 18:58:15,876 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:58:15,876 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-06 18:58:15,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 18:58:15,877 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-06 18:58:15,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:58:15,877 INFO L85 PathProgramCache]: Analyzing trace with hash 889513869, now seen corresponding path program 1 times [2021-12-06 18:58:15,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:58:15,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083897864] [2021-12-06 18:58:15,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:15,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:58:15,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:15,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:58:15,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:58:15,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083897864] [2021-12-06 18:58:15,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083897864] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:58:15,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:58:15,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:58:15,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594147499] [2021-12-06 18:58:15,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:58:15,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:58:15,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:58:15,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:58:15,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:58:15,910 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:15,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:58:15,933 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2021-12-06 18:58:15,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:58:15,934 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-06 18:58:15,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:58:15,934 INFO L225 Difference]: With dead ends: 15 [2021-12-06 18:58:15,935 INFO L226 Difference]: Without dead ends: 14 [2021-12-06 18:58:15,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:58:15,936 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 13 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:58:15,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 12 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:58:15,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-12-06 18:58:15,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-12-06 18:58:15,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:15,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-12-06 18:58:15,940 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 6 [2021-12-06 18:58:15,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:58:15,941 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-12-06 18:58:15,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:15,941 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-12-06 18:58:15,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-06 18:58:15,942 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:58:15,942 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:58:15,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 18:58:15,942 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-06 18:58:15,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:58:15,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1805126220, now seen corresponding path program 1 times [2021-12-06 18:58:15,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:58:15,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155083504] [2021-12-06 18:58:15,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:15,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:58:15,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:15,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:58:15,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:58:15,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155083504] [2021-12-06 18:58:15,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155083504] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:58:15,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:58:15,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:58:15,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22744115] [2021-12-06 18:58:15,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:58:15,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:58:15,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:58:15,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:58:15,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:58:15,974 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:15,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:58:15,992 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2021-12-06 18:58:15,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:58:15,993 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-12-06 18:58:15,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:58:15,993 INFO L225 Difference]: With dead ends: 15 [2021-12-06 18:58:15,993 INFO L226 Difference]: Without dead ends: 14 [2021-12-06 18:58:15,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:58:15,995 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 13 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:58:15,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 10 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:58:15,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-12-06 18:58:15,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2021-12-06 18:58:15,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:15,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2021-12-06 18:58:15,999 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 7 [2021-12-06 18:58:15,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:58:16,000 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-12-06 18:58:16,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:16,000 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2021-12-06 18:58:16,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 18:58:16,000 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:58:16,000 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:58:16,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 18:58:16,001 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-06 18:58:16,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:58:16,001 INFO L85 PathProgramCache]: Analyzing trace with hash -440488521, now seen corresponding path program 1 times [2021-12-06 18:58:16,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:58:16,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543444984] [2021-12-06 18:58:16,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:16,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:58:16,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:16,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:58:16,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:58:16,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543444984] [2021-12-06 18:58:16,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543444984] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:58:16,026 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:58:16,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:58:16,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004294646] [2021-12-06 18:58:16,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:58:16,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:58:16,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:58:16,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:58:16,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:58:16,028 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:16,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:58:16,042 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2021-12-06 18:58:16,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:58:16,043 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-06 18:58:16,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:58:16,044 INFO L225 Difference]: With dead ends: 23 [2021-12-06 18:58:16,044 INFO L226 Difference]: Without dead ends: 22 [2021-12-06 18:58:16,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:58:16,046 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:58:16,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 11 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:58:16,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-12-06 18:58:16,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2021-12-06 18:58:16,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:16,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-12-06 18:58:16,053 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 9 [2021-12-06 18:58:16,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:58:16,054 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-12-06 18:58:16,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:16,054 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-12-06 18:58:16,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 18:58:16,055 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:58:16,055 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:58:16,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 18:58:16,055 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-06 18:58:16,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:58:16,056 INFO L85 PathProgramCache]: Analyzing trace with hash -440488466, now seen corresponding path program 1 times [2021-12-06 18:58:16,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:58:16,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102786518] [2021-12-06 18:58:16,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:16,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:58:16,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:16,101 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:58:16,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:58:16,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102786518] [2021-12-06 18:58:16,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102786518] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:58:16,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465838863] [2021-12-06 18:58:16,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:16,103 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:58:16,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:58:16,104 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:58:16,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 18:58:16,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:16,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 18:58:16,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:58:16,251 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:58:16,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:58:16,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:58:16,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465838863] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:58:16,283 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:58:16,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2021-12-06 18:58:16,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385199128] [2021-12-06 18:58:16,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:58:16,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 18:58:16,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:58:16,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 18:58:16,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:58:16,285 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:16,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:58:16,333 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2021-12-06 18:58:16,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 18:58:16,333 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-06 18:58:16,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:58:16,334 INFO L225 Difference]: With dead ends: 35 [2021-12-06 18:58:16,334 INFO L226 Difference]: Without dead ends: 21 [2021-12-06 18:58:16,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:58:16,336 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 14 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:58:16,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 8 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:58:16,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-12-06 18:58:16,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2021-12-06 18:58:16,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:16,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2021-12-06 18:58:16,341 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 9 [2021-12-06 18:58:16,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:58:16,342 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-12-06 18:58:16,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:16,342 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2021-12-06 18:58:16,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-06 18:58:16,343 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:58:16,343 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-12-06 18:58:16,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 18:58:16,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:58:16,545 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-06 18:58:16,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:58:16,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1116435329, now seen corresponding path program 1 times [2021-12-06 18:58:16,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:58:16,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720326073] [2021-12-06 18:58:16,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:16,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:58:16,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:16,668 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 18:58:16,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:58:16,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720326073] [2021-12-06 18:58:16,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720326073] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:58:16,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202908081] [2021-12-06 18:58:16,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:16,671 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:58:16,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:58:16,674 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:58:16,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 18:58:16,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:16,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 18:58:16,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:58:16,770 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 18:58:16,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:58:16,800 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 18:58:16,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202908081] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:58:16,801 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:58:16,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-12-06 18:58:16,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399637755] [2021-12-06 18:58:16,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:58:16,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:58:16,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:58:16,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:58:16,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:58:16,803 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:16,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:58:16,829 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2021-12-06 18:58:16,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:58:16,830 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-12-06 18:58:16,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:58:16,830 INFO L225 Difference]: With dead ends: 47 [2021-12-06 18:58:16,830 INFO L226 Difference]: Without dead ends: 46 [2021-12-06 18:58:16,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:58:16,831 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 12 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:58:16,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 20 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:58:16,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-12-06 18:58:16,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2021-12-06 18:58:16,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 42 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:16,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2021-12-06 18:58:16,838 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 16 [2021-12-06 18:58:16,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:58:16,838 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2021-12-06 18:58:16,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:16,838 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2021-12-06 18:58:16,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-06 18:58:16,839 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:58:16,839 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:58:16,858 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 18:58:17,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-06 18:58:17,041 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-06 18:58:17,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:58:17,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1116435274, now seen corresponding path program 1 times [2021-12-06 18:58:17,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:58:17,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584223955] [2021-12-06 18:58:17,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:17,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:58:17,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:17,206 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:58:17,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:58:17,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584223955] [2021-12-06 18:58:17,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584223955] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:58:17,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785126809] [2021-12-06 18:58:17,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:17,207 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:58:17,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:58:17,208 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:58:17,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 18:58:17,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:17,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 18:58:17,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:58:17,290 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:58:17,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:58:17,350 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:58:17,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785126809] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:58:17,351 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:58:17,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2021-12-06 18:58:17,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537846936] [2021-12-06 18:58:17,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:58:17,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-06 18:58:17,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:58:17,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 18:58:17,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2021-12-06 18:58:17,353 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:17,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:58:17,607 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2021-12-06 18:58:17,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-06 18:58:17,608 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-12-06 18:58:17,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:58:17,609 INFO L225 Difference]: With dead ends: 66 [2021-12-06 18:58:17,609 INFO L226 Difference]: Without dead ends: 65 [2021-12-06 18:58:17,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=321, Invalid=939, Unknown=0, NotChecked=0, Total=1260 [2021-12-06 18:58:17,611 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 69 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:58:17,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 17 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:58:17,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-12-06 18:58:17,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 55. [2021-12-06 18:58:17,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 53 states have (on average 1.2452830188679245) internal successors, (66), 54 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:17,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 66 transitions. [2021-12-06 18:58:17,622 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 66 transitions. Word has length 16 [2021-12-06 18:58:17,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:58:17,622 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 66 transitions. [2021-12-06 18:58:17,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:17,623 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 66 transitions. [2021-12-06 18:58:17,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-06 18:58:17,624 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:58:17,624 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:58:17,643 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 18:58:17,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-12-06 18:58:17,827 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-06 18:58:17,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:58:17,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1093492138, now seen corresponding path program 2 times [2021-12-06 18:58:17,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:58:17,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660108404] [2021-12-06 18:58:17,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:17,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:58:17,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:17,909 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 18:58:17,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:58:17,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660108404] [2021-12-06 18:58:17,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660108404] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:58:17,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549990412] [2021-12-06 18:58:17,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 18:58:17,910 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:58:17,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:58:17,911 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:58:17,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 18:58:17,932 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 18:58:17,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:58:17,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 18:58:17,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:58:18,020 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 18:58:18,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:58:18,101 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 26 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 18:58:18,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549990412] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:58:18,101 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:58:18,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2021-12-06 18:58:18,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157471775] [2021-12-06 18:58:18,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:58:18,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-06 18:58:18,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:58:18,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-06 18:58:18,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2021-12-06 18:58:18,103 INFO L87 Difference]: Start difference. First operand 55 states and 66 transitions. Second operand has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:18,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:58:18,536 INFO L93 Difference]: Finished difference Result 101 states and 120 transitions. [2021-12-06 18:58:18,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-12-06 18:58:18,536 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-06 18:58:18,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:58:18,537 INFO L225 Difference]: With dead ends: 101 [2021-12-06 18:58:18,537 INFO L226 Difference]: Without dead ends: 64 [2021-12-06 18:58:18,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=483, Invalid=1773, Unknown=0, NotChecked=0, Total=2256 [2021-12-06 18:58:18,539 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 78 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:58:18,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 18 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:58:18,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-12-06 18:58:18,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 43. [2021-12-06 18:58:18,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 41 states have (on average 1.146341463414634) internal successors, (47), 42 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:18,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2021-12-06 18:58:18,545 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 22 [2021-12-06 18:58:18,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:58:18,545 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2021-12-06 18:58:18,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:18,545 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2021-12-06 18:58:18,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-06 18:58:18,546 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:58:18,546 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1] [2021-12-06 18:58:18,566 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 18:58:18,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:58:18,748 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-06 18:58:18,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:58:18,750 INFO L85 PathProgramCache]: Analyzing trace with hash -382530633, now seen corresponding path program 2 times [2021-12-06 18:58:18,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:58:18,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047630037] [2021-12-06 18:58:18,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:18,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:58:18,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:18,887 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-12-06 18:58:18,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:58:18,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047630037] [2021-12-06 18:58:18,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047630037] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:58:18,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005377081] [2021-12-06 18:58:18,889 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 18:58:18,890 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:58:18,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:58:18,891 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:58:18,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 18:58:18,928 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-06 18:58:18,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:58:18,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 18:58:18,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:58:18,993 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-12-06 18:58:18,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:58:19,036 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-12-06 18:58:19,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005377081] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:58:19,036 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:58:19,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2021-12-06 18:58:19,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938646627] [2021-12-06 18:58:19,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:58:19,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:58:19,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:58:19,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:58:19,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:58:19,037 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:19,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:58:19,047 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2021-12-06 18:58:19,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:58:19,047 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-12-06 18:58:19,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:58:19,048 INFO L225 Difference]: With dead ends: 43 [2021-12-06 18:58:19,048 INFO L226 Difference]: Without dead ends: 42 [2021-12-06 18:58:19,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:58:19,049 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 3 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:58:19,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 8 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:58:19,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-12-06 18:58:19,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2021-12-06 18:58:19,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.125) internal successors, (45), 40 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:19,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2021-12-06 18:58:19,056 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 37 [2021-12-06 18:58:19,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:58:19,056 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2021-12-06 18:58:19,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:19,057 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2021-12-06 18:58:19,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-06 18:58:19,057 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:58:19,057 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1] [2021-12-06 18:58:19,077 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 18:58:19,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:58:19,259 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-06 18:58:19,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:58:19,260 INFO L85 PathProgramCache]: Analyzing trace with hash -382530578, now seen corresponding path program 3 times [2021-12-06 18:58:19,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:58:19,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043199203] [2021-12-06 18:58:19,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:19,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:58:19,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:19,390 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 18:58:19,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:58:19,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043199203] [2021-12-06 18:58:19,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043199203] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:58:19,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063934874] [2021-12-06 18:58:19,391 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 18:58:19,391 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:58:19,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:58:19,392 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:58:19,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 18:58:19,419 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-12-06 18:58:19,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:58:19,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 18:58:19,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:58:19,500 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 18:58:19,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:58:19,616 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 18:58:19,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063934874] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:58:19,616 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:58:19,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2021-12-06 18:58:19,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072718804] [2021-12-06 18:58:19,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:58:19,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-06 18:58:19,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:58:19,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-06 18:58:19,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2021-12-06 18:58:19,618 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 21 states, 20 states have (on average 3.9) internal successors, (78), 21 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:20,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:58:20,379 INFO L93 Difference]: Finished difference Result 154 states and 181 transitions. [2021-12-06 18:58:20,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-12-06 18:58:20,379 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.9) internal successors, (78), 21 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-12-06 18:58:20,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:58:20,380 INFO L225 Difference]: With dead ends: 154 [2021-12-06 18:58:20,380 INFO L226 Difference]: Without dead ends: 153 [2021-12-06 18:58:20,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2822 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1886, Invalid=5770, Unknown=0, NotChecked=0, Total=7656 [2021-12-06 18:58:20,385 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 277 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:58:20,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 21 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:58:20,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-12-06 18:58:20,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 106. [2021-12-06 18:58:20,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.2095238095238094) internal successors, (127), 105 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:20,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 127 transitions. [2021-12-06 18:58:20,400 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 127 transitions. Word has length 37 [2021-12-06 18:58:20,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:58:20,400 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 127 transitions. [2021-12-06 18:58:20,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.9) internal successors, (78), 21 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:20,401 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 127 transitions. [2021-12-06 18:58:20,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-06 18:58:20,402 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:58:20,402 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 5, 4, 4, 4, 1, 1, 1, 1] [2021-12-06 18:58:20,422 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 18:58:20,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-06 18:58:20,604 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-06 18:58:20,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:58:20,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1842534286, now seen corresponding path program 4 times [2021-12-06 18:58:20,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:58:20,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231486875] [2021-12-06 18:58:20,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:20,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:58:20,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:20,728 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 59 proven. 74 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 18:58:20,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:58:20,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231486875] [2021-12-06 18:58:20,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231486875] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:58:20,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356407186] [2021-12-06 18:58:20,729 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 18:58:20,729 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:58:20,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:58:20,730 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:58:20,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 18:58:20,758 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 18:58:20,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:58:20,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 18:58:20,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:58:20,908 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 18:58:20,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:58:21,161 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 18:58:21,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356407186] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:58:21,161 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:58:21,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 33 [2021-12-06 18:58:21,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565242462] [2021-12-06 18:58:21,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:58:21,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-12-06 18:58:21,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:58:21,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-12-06 18:58:21,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=899, Unknown=0, NotChecked=0, Total=1056 [2021-12-06 18:58:21,163 INFO L87 Difference]: Start difference. First operand 106 states and 127 transitions. Second operand has 33 states, 33 states have (on average 3.787878787878788) internal successors, (125), 33 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:25,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:58:25,898 INFO L93 Difference]: Finished difference Result 360 states and 430 transitions. [2021-12-06 18:58:25,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2021-12-06 18:58:25,898 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.787878787878788) internal successors, (125), 33 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-12-06 18:58:25,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:58:25,900 INFO L225 Difference]: With dead ends: 360 [2021-12-06 18:58:25,901 INFO L226 Difference]: Without dead ends: 296 [2021-12-06 18:58:25,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16311 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=5653, Invalid=35353, Unknown=0, NotChecked=0, Total=41006 [2021-12-06 18:58:25,912 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 842 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 1396 mSolverCounterSat, 569 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 1965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 569 IncrementalHoareTripleChecker+Valid, 1396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 18:58:25,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [842 Valid, 21 Invalid, 1965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [569 Valid, 1396 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 18:58:25,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-12-06 18:58:25,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 194. [2021-12-06 18:58:25,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 1.1917098445595855) internal successors, (230), 193 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:25,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 230 transitions. [2021-12-06 18:58:25,928 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 230 transitions. Word has length 43 [2021-12-06 18:58:25,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:58:25,929 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 230 transitions. [2021-12-06 18:58:25,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.787878787878788) internal successors, (125), 33 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:25,929 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 230 transitions. [2021-12-06 18:58:25,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-06 18:58:25,930 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:58:25,930 INFO L514 BasicCegarLoop]: trace histogram [9, 8, 8, 6, 5, 5, 5, 1, 1, 1, 1] [2021-12-06 18:58:25,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-06 18:58:26,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-06 18:58:26,132 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-06 18:58:26,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:58:26,133 INFO L85 PathProgramCache]: Analyzing trace with hash -369537692, now seen corresponding path program 5 times [2021-12-06 18:58:26,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:58:26,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290094887] [2021-12-06 18:58:26,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:26,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:58:26,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:26,230 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 19 proven. 163 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 18:58:26,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:58:26,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290094887] [2021-12-06 18:58:26,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290094887] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:58:26,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762463763] [2021-12-06 18:58:26,230 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 18:58:26,230 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:58:26,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:58:26,231 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:58:26,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 18:58:26,260 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-12-06 18:58:26,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:58:26,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-06 18:58:26,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:58:26,445 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 64 proven. 119 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 18:58:26,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:58:26,558 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 36 proven. 147 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 18:58:26,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762463763] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:58:26,558 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:58:26,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 29 [2021-12-06 18:58:26,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672515170] [2021-12-06 18:58:26,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:58:26,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-12-06 18:58:26,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:58:26,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-12-06 18:58:26,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=670, Unknown=0, NotChecked=0, Total=812 [2021-12-06 18:58:26,560 INFO L87 Difference]: Start difference. First operand 194 states and 230 transitions. Second operand has 29 states, 29 states have (on average 3.3793103448275863) internal successors, (98), 29 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:27,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:58:27,350 INFO L93 Difference]: Finished difference Result 615 states and 726 transitions. [2021-12-06 18:58:27,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-12-06 18:58:27,350 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.3793103448275863) internal successors, (98), 29 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-12-06 18:58:27,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:58:27,352 INFO L225 Difference]: With dead ends: 615 [2021-12-06 18:58:27,353 INFO L226 Difference]: Without dead ends: 443 [2021-12-06 18:58:27,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 83 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1417 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1328, Invalid=4372, Unknown=0, NotChecked=0, Total=5700 [2021-12-06 18:58:27,356 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 135 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:58:27,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 19 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 18:58:27,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2021-12-06 18:58:27,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 391. [2021-12-06 18:58:27,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 1.1564102564102565) internal successors, (451), 390 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:27,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 451 transitions. [2021-12-06 18:58:27,382 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 451 transitions. Word has length 50 [2021-12-06 18:58:27,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:58:27,382 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 451 transitions. [2021-12-06 18:58:27,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.3793103448275863) internal successors, (98), 29 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:27,383 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 451 transitions. [2021-12-06 18:58:27,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-06 18:58:27,384 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:58:27,384 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 6, 5, 5, 5, 1, 1, 1, 1] [2021-12-06 18:58:27,405 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 18:58:27,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-06 18:58:27,585 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-06 18:58:27,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:58:27,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1350252270, now seen corresponding path program 6 times [2021-12-06 18:58:27,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:58:27,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897493784] [2021-12-06 18:58:27,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:27,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:58:27,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:27,650 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 243 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 18:58:27,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:58:27,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897493784] [2021-12-06 18:58:27,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897493784] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:58:27,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372657614] [2021-12-06 18:58:27,651 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 18:58:27,651 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:58:27,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:58:27,652 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:58:27,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 18:58:27,676 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-12-06 18:58:27,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:58:27,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 18:58:27,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:58:27,793 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 46 proven. 157 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-12-06 18:58:27,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:58:27,898 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 7 proven. 196 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-12-06 18:58:27,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372657614] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:58:27,899 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:58:27,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 27 [2021-12-06 18:58:27,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607886630] [2021-12-06 18:58:27,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:58:27,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-06 18:58:27,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:58:27,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-06 18:58:27,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=618, Unknown=0, NotChecked=0, Total=756 [2021-12-06 18:58:27,900 INFO L87 Difference]: Start difference. First operand 391 states and 451 transitions. Second operand has 28 states, 27 states have (on average 3.962962962962963) internal successors, (107), 28 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:31,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:58:31,725 INFO L93 Difference]: Finished difference Result 1792 states and 2148 transitions. [2021-12-06 18:58:31,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 241 states. [2021-12-06 18:58:31,725 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 3.962962962962963) internal successors, (107), 28 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-12-06 18:58:31,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:58:31,732 INFO L225 Difference]: With dead ends: 1792 [2021-12-06 18:58:31,732 INFO L226 Difference]: Without dead ends: 1791 [2021-12-06 18:58:31,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 254 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30921 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=12783, Invalid=52497, Unknown=0, NotChecked=0, Total=65280 [2021-12-06 18:58:31,737 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 390 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 354 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 1021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 354 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:58:31,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [390 Valid, 16 Invalid, 1021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [354 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 18:58:31,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1791 states. [2021-12-06 18:58:31,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1791 to 610. [2021-12-06 18:58:31,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 609 states have (on average 1.1592775041050902) internal successors, (706), 609 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:31,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 706 transitions. [2021-12-06 18:58:31,794 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 706 transitions. Word has length 56 [2021-12-06 18:58:31,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:58:31,794 INFO L470 AbstractCegarLoop]: Abstraction has 610 states and 706 transitions. [2021-12-06 18:58:31,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 3.962962962962963) internal successors, (107), 28 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:31,795 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 706 transitions. [2021-12-06 18:58:31,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-06 18:58:31,796 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:58:31,796 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1] [2021-12-06 18:58:31,815 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-06 18:58:31,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-06 18:58:31,998 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-06 18:58:31,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:58:31,999 INFO L85 PathProgramCache]: Analyzing trace with hash 529185006, now seen corresponding path program 7 times [2021-12-06 18:58:31,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:58:32,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566461680] [2021-12-06 18:58:32,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:32,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:58:32,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:32,118 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 0 proven. 487 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-06 18:58:32,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:58:32,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566461680] [2021-12-06 18:58:32,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566461680] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:58:32,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910999879] [2021-12-06 18:58:32,118 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 18:58:32,118 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:58:32,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:58:32,119 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:58:32,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 18:58:32,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:32,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-06 18:58:32,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:58:32,267 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 0 proven. 487 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-06 18:58:32,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:58:32,488 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 0 proven. 487 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-06 18:58:32,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910999879] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:58:32,488 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:58:32,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2021-12-06 18:58:32,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880178088] [2021-12-06 18:58:32,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:58:32,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-12-06 18:58:32,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:58:32,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-12-06 18:58:32,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=726, Unknown=0, NotChecked=0, Total=1056 [2021-12-06 18:58:32,490 INFO L87 Difference]: Start difference. First operand 610 states and 706 transitions. Second operand has 33 states, 32 states have (on average 5.0625) internal successors, (162), 33 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:35,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:58:35,219 INFO L93 Difference]: Finished difference Result 4763 states and 5599 transitions. [2021-12-06 18:58:35,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2021-12-06 18:58:35,220 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 5.0625) internal successors, (162), 33 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-12-06 18:58:35,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:58:35,241 INFO L225 Difference]: With dead ends: 4763 [2021-12-06 18:58:35,241 INFO L226 Difference]: Without dead ends: 4762 [2021-12-06 18:58:35,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16160 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=9119, Invalid=29101, Unknown=0, NotChecked=0, Total=38220 [2021-12-06 18:58:35,246 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 526 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 331 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 331 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:58:35,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [526 Valid, 27 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [331 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 18:58:35,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4762 states. [2021-12-06 18:58:35,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4762 to 1183. [2021-12-06 18:58:35,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 1182 states have (on average 1.1455160744500845) internal successors, (1354), 1182 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:35,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1354 transitions. [2021-12-06 18:58:35,355 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1354 transitions. Word has length 79 [2021-12-06 18:58:35,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:58:35,356 INFO L470 AbstractCegarLoop]: Abstraction has 1183 states and 1354 transitions. [2021-12-06 18:58:35,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 5.0625) internal successors, (162), 33 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:35,356 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1354 transitions. [2021-12-06 18:58:35,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-06 18:58:35,357 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:58:35,357 INFO L514 BasicCegarLoop]: trace histogram [18, 17, 17, 11, 10, 10, 10, 1, 1, 1, 1] [2021-12-06 18:58:35,389 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-06 18:58:35,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:58:35,558 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-06 18:58:35,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:58:35,559 INFO L85 PathProgramCache]: Analyzing trace with hash 480518066, now seen corresponding path program 8 times [2021-12-06 18:58:35,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:58:35,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792557546] [2021-12-06 18:58:35,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:35,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:58:35,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:35,682 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 380 proven. 92 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2021-12-06 18:58:35,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:58:35,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792557546] [2021-12-06 18:58:35,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792557546] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:58:35,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069694967] [2021-12-06 18:58:35,683 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 18:58:35,683 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:58:35,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:58:35,684 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:58:35,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-06 18:58:35,713 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 18:58:35,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:58:35,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-06 18:58:35,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:58:35,999 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 779 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-06 18:58:35,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:58:36,279 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 1 proven. 778 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-06 18:58:36,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069694967] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:58:36,280 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:58:36,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16, 16] total 42 [2021-12-06 18:58:36,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033923229] [2021-12-06 18:58:36,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:58:36,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-12-06 18:58:36,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:58:36,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-12-06 18:58:36,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=1521, Unknown=0, NotChecked=0, Total=1806 [2021-12-06 18:58:36,281 INFO L87 Difference]: Start difference. First operand 1183 states and 1354 transitions. Second operand has 43 states, 42 states have (on average 4.738095238095238) internal successors, (199), 43 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:59:05,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:59:05,670 INFO L93 Difference]: Finished difference Result 14418 states and 17384 transitions. [2021-12-06 18:59:05,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 887 states. [2021-12-06 18:59:05,670 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 4.738095238095238) internal successors, (199), 43 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-12-06 18:59:05,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:59:05,717 INFO L225 Difference]: With dead ends: 14418 [2021-12-06 18:59:05,717 INFO L226 Difference]: Without dead ends: 13834 [2021-12-06 18:59:05,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1080 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 917 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424255 ImplicationChecksByTransitivity, 27.1s TimeCoverageRelationStatistics Valid=83086, Invalid=760556, Unknown=0, NotChecked=0, Total=843642 [2021-12-06 18:59:05,760 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 2973 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 1422 mSolverCounterSat, 1741 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2973 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 3163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1741 IncrementalHoareTripleChecker+Valid, 1422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:59:05,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2973 Valid, 20 Invalid, 3163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1741 Valid, 1422 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-06 18:59:05,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13834 states. [2021-12-06 18:59:06,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13834 to 5483. [2021-12-06 18:59:06,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5483 states, 5482 states have (on average 1.1742064939802992) internal successors, (6437), 5482 states have internal predecessors, (6437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:59:06,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5483 states to 5483 states and 6437 transitions. [2021-12-06 18:59:06,452 INFO L78 Accepts]: Start accepts. Automaton has 5483 states and 6437 transitions. Word has length 97 [2021-12-06 18:59:06,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:59:06,452 INFO L470 AbstractCegarLoop]: Abstraction has 5483 states and 6437 transitions. [2021-12-06 18:59:06,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 4.738095238095238) internal successors, (199), 43 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:59:06,453 INFO L276 IsEmpty]: Start isEmpty. Operand 5483 states and 6437 transitions. [2021-12-06 18:59:06,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-12-06 18:59:06,459 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:59:06,459 INFO L514 BasicCegarLoop]: trace histogram [25, 24, 24, 19, 18, 18, 18, 1, 1, 1, 1] [2021-12-06 18:59:06,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-06 18:59:06,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:59:06,660 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-06 18:59:06,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:59:06,661 INFO L85 PathProgramCache]: Analyzing trace with hash -2108411831, now seen corresponding path program 9 times [2021-12-06 18:59:06,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:59:06,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708223920] [2021-12-06 18:59:06,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:59:06,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:59:06,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:59:06,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1956 backedges. 0 proven. 1837 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2021-12-06 18:59:06,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:59:06,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708223920] [2021-12-06 18:59:06,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708223920] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:59:06,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567040635] [2021-12-06 18:59:06,925 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 18:59:06,925 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:59:06,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:59:06,926 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:59:06,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-06 18:59:06,958 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-12-06 18:59:06,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:59:06,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-06 18:59:06,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:59:07,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1956 backedges. 941 proven. 267 refuted. 0 times theorem prover too weak. 748 trivial. 0 not checked. [2021-12-06 18:59:07,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:59:07,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1956 backedges. 941 proven. 267 refuted. 0 times theorem prover too weak. 748 trivial. 0 not checked. [2021-12-06 18:59:07,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567040635] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:59:07,563 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:59:07,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 13, 13] total 46 [2021-12-06 18:59:07,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320298005] [2021-12-06 18:59:07,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:59:07,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-12-06 18:59:07,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:59:07,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-12-06 18:59:07,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=397, Invalid=1765, Unknown=0, NotChecked=0, Total=2162 [2021-12-06 18:59:07,565 INFO L87 Difference]: Start difference. First operand 5483 states and 6437 transitions. Second operand has 47 states, 46 states have (on average 4.739130434782608) internal successors, (218), 47 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:59:49,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:59:49,012 INFO L93 Difference]: Finished difference Result 38309 states and 45691 transitions. [2021-12-06 18:59:49,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 674 states. [2021-12-06 18:59:49,013 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 4.739130434782608) internal successors, (218), 47 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-12-06 18:59:49,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:59:49,094 INFO L225 Difference]: With dead ends: 38309 [2021-12-06 18:59:49,094 INFO L226 Difference]: Without dead ends: 38308 [2021-12-06 18:59:49,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 994 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 712 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252889 ImplicationChecksByTransitivity, 35.6s TimeCoverageRelationStatistics Valid=81696, Invalid=427386, Unknown=0, NotChecked=0, Total=509082 [2021-12-06 18:59:49,123 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 4990 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 3538 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4990 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 4633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3538 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-06 18:59:49,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4990 Valid, 20 Invalid, 4633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3538 Valid, 1095 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-06 18:59:49,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38308 states. [2021-12-06 18:59:49,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38308 to 4807. [2021-12-06 18:59:49,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4807 states, 4806 states have (on average 1.188930503537245) internal successors, (5714), 4806 states have internal predecessors, (5714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:59:49,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4807 states to 4807 states and 5714 transitions. [2021-12-06 18:59:49,934 INFO L78 Accepts]: Start accepts. Automaton has 4807 states and 5714 transitions. Word has length 150 [2021-12-06 18:59:49,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:59:49,934 INFO L470 AbstractCegarLoop]: Abstraction has 4807 states and 5714 transitions. [2021-12-06 18:59:49,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 4.739130434782608) internal successors, (218), 47 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:59:49,934 INFO L276 IsEmpty]: Start isEmpty. Operand 4807 states and 5714 transitions. [2021-12-06 18:59:49,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-06 18:59:49,939 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:59:49,940 INFO L514 BasicCegarLoop]: trace histogram [24, 23, 23, 23, 22, 22, 22, 1, 1, 1, 1] [2021-12-06 18:59:49,959 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-12-06 18:59:50,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-06 18:59:50,141 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-06 18:59:50,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:59:50,143 INFO L85 PathProgramCache]: Analyzing trace with hash -472821010, now seen corresponding path program 10 times [2021-12-06 18:59:50,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:59:50,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214627781] [2021-12-06 18:59:50,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:59:50,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:59:50,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:59:50,407 INFO L134 CoverageAnalysis]: Checked inductivity of 2279 backedges. 0 proven. 2257 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-06 18:59:50,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:59:50,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214627781] [2021-12-06 18:59:50,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214627781] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:59:50,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127418549] [2021-12-06 18:59:50,408 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 18:59:50,408 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:59:50,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:59:50,409 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:59:50,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-06 18:59:50,451 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 18:59:50,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:59:50,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 27 conjunts are in the unsatisfiable core [2021-12-06 18:59:50,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:59:50,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2279 backedges. 0 proven. 2257 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-06 18:59:50,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:59:51,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2279 backedges. 0 proven. 2257 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-06 18:59:51,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127418549] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:59:51,176 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:59:51,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 56 [2021-12-06 18:59:51,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899039136] [2021-12-06 18:59:51,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:59:51,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2021-12-06 18:59:51,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:59:51,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-12-06 18:59:51,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1206, Invalid=1986, Unknown=0, NotChecked=0, Total=3192 [2021-12-06 18:59:51,178 INFO L87 Difference]: Start difference. First operand 4807 states and 5714 transitions. Second operand has 57 states, 56 states have (on average 5.892857142857143) internal successors, (330), 57 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:00:17,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:00:17,628 INFO L93 Difference]: Finished difference Result 124956 states and 148729 transitions. [2021-12-06 19:00:17,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 406 states. [2021-12-06 19:00:17,629 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 5.892857142857143) internal successors, (330), 57 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2021-12-06 19:00:17,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:00:17,795 INFO L225 Difference]: With dead ends: 124956 [2021-12-06 19:00:17,795 INFO L226 Difference]: Without dead ends: 124955 [2021-12-06 19:00:17,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 706 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 410 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75530 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=39677, Invalid=129655, Unknown=0, NotChecked=0, Total=169332 [2021-12-06 19:00:17,824 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 1466 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 967 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 1617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 967 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 19:00:17,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1466 Valid, 44 Invalid, 1617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [967 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 19:00:17,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124955 states. [2021-12-06 19:00:20,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124955 to 18053. [2021-12-06 19:00:20,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18053 states, 18052 states have (on average 1.193718147573676) internal successors, (21549), 18052 states have internal predecessors, (21549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:00:20,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18053 states to 18053 states and 21549 transitions. [2021-12-06 19:00:20,133 INFO L78 Accepts]: Start accepts. Automaton has 18053 states and 21549 transitions. Word has length 163 [2021-12-06 19:00:20,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:00:20,134 INFO L470 AbstractCegarLoop]: Abstraction has 18053 states and 21549 transitions. [2021-12-06 19:00:20,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 5.892857142857143) internal successors, (330), 57 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:00:20,134 INFO L276 IsEmpty]: Start isEmpty. Operand 18053 states and 21549 transitions. [2021-12-06 19:00:20,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-12-06 19:00:20,142 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:00:20,142 INFO L514 BasicCegarLoop]: trace histogram [40, 39, 39, 27, 26, 26, 26, 1, 1, 1, 1] [2021-12-06 19:00:20,166 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-12-06 19:00:20,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-06 19:00:20,344 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-06 19:00:20,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:00:20,345 INFO L85 PathProgramCache]: Analyzing trace with hash 989192194, now seen corresponding path program 11 times [2021-12-06 19:00:20,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:00:20,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591061436] [2021-12-06 19:00:20,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:00:20,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:00:20,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:00:20,578 INFO L134 CoverageAnalysis]: Checked inductivity of 4667 backedges. 0 proven. 3602 refuted. 0 times theorem prover too weak. 1065 trivial. 0 not checked. [2021-12-06 19:00:20,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:00:20,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591061436] [2021-12-06 19:00:20,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591061436] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:00:20,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042369752] [2021-12-06 19:00:20,578 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 19:00:20,579 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:00:20,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:00:20,579 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:00:20,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-06 19:00:20,672 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 44 check-sat command(s) [2021-12-06 19:00:20,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:00:20,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 35 conjunts are in the unsatisfiable core [2021-12-06 19:00:20,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:00:21,455 INFO L134 CoverageAnalysis]: Checked inductivity of 4667 backedges. 974 proven. 3625 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-12-06 19:00:21,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:00:22,108 INFO L134 CoverageAnalysis]: Checked inductivity of 4667 backedges. 858 proven. 3741 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-12-06 19:00:22,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042369752] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:00:22,108 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:00:22,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 36, 36] total 80 [2021-12-06 19:00:22,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062921959] [2021-12-06 19:00:22,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:00:22,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2021-12-06 19:00:22,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:00:22,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-12-06 19:00:22,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=797, Invalid=5523, Unknown=0, NotChecked=0, Total=6320 [2021-12-06 19:00:22,111 INFO L87 Difference]: Start difference. First operand 18053 states and 21549 transitions. Second operand has 80 states, 80 states have (on average 5.45) internal successors, (436), 80 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:00:39,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:00:39,105 INFO L93 Difference]: Finished difference Result 44947 states and 53155 transitions. [2021-12-06 19:00:39,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 365 states. [2021-12-06 19:00:39,107 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 5.45) internal successors, (436), 80 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 227 [2021-12-06 19:00:39,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:00:39,136 INFO L225 Difference]: With dead ends: 44947 [2021-12-06 19:00:39,136 INFO L226 Difference]: Without dead ends: 27592 [2021-12-06 19:00:39,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 836 GetRequests, 396 SyntacticMatches, 1 SemanticMatches, 439 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72814 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=18055, Invalid=175985, Unknown=0, NotChecked=0, Total=194040 [2021-12-06 19:00:39,159 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 2028 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 6167 mSolverCounterSat, 1292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2028 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 7459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1292 IncrementalHoareTripleChecker+Valid, 6167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:00:39,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2028 Valid, 27 Invalid, 7459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1292 Valid, 6167 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-06 19:00:39,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27592 states. [2021-12-06 19:00:42,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27592 to 14754. [2021-12-06 19:00:42,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14754 states, 14753 states have (on average 1.155290449400122) internal successors, (17044), 14753 states have internal predecessors, (17044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:00:42,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14754 states to 14754 states and 17044 transitions. [2021-12-06 19:00:42,151 INFO L78 Accepts]: Start accepts. Automaton has 14754 states and 17044 transitions. Word has length 227 [2021-12-06 19:00:42,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:00:42,151 INFO L470 AbstractCegarLoop]: Abstraction has 14754 states and 17044 transitions. [2021-12-06 19:00:42,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 5.45) internal successors, (436), 80 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:00:42,151 INFO L276 IsEmpty]: Start isEmpty. Operand 14754 states and 17044 transitions. [2021-12-06 19:00:42,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2021-12-06 19:00:42,163 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:00:42,164 INFO L514 BasicCegarLoop]: trace histogram [59, 58, 58, 22, 21, 21, 21, 1, 1, 1, 1] [2021-12-06 19:00:42,183 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-12-06 19:00:42,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-06 19:00:42,365 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-06 19:00:42,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:00:42,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1646657120, now seen corresponding path program 12 times [2021-12-06 19:00:42,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:00:42,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728331186] [2021-12-06 19:00:42,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:00:42,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:00:42,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:00:42,568 INFO L134 CoverageAnalysis]: Checked inductivity of 7175 backedges. 0 proven. 3501 refuted. 0 times theorem prover too weak. 3674 trivial. 0 not checked. [2021-12-06 19:00:42,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:00:42,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728331186] [2021-12-06 19:00:42,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728331186] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:00:42,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231299897] [2021-12-06 19:00:42,569 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 19:00:42,569 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:00:42,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:00:42,570 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:00:42,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-06 19:00:42,657 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2021-12-06 19:00:42,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:00:42,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-06 19:00:42,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:00:43,024 INFO L134 CoverageAnalysis]: Checked inductivity of 7175 backedges. 820 proven. 2681 refuted. 0 times theorem prover too weak. 3674 trivial. 0 not checked. [2021-12-06 19:00:43,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:00:43,463 INFO L134 CoverageAnalysis]: Checked inductivity of 7175 backedges. 56 proven. 3445 refuted. 0 times theorem prover too weak. 3674 trivial. 0 not checked. [2021-12-06 19:00:43,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231299897] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:00:43,463 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:00:43,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 45 [2021-12-06 19:00:43,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846199732] [2021-12-06 19:00:43,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:00:43,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-12-06 19:00:43,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:00:43,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-12-06 19:00:43,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=352, Invalid=1718, Unknown=0, NotChecked=0, Total=2070 [2021-12-06 19:00:43,465 INFO L87 Difference]: Start difference. First operand 14754 states and 17044 transitions. Second operand has 46 states, 45 states have (on average 4.4222222222222225) internal successors, (199), 46 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:01:04,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:01:04,914 INFO L93 Difference]: Finished difference Result 42613 states and 50641 transitions. [2021-12-06 19:01:04,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 470 states. [2021-12-06 19:01:04,915 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 4.4222222222222225) internal successors, (199), 46 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 264 [2021-12-06 19:01:04,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:01:04,954 INFO L225 Difference]: With dead ends: 42613 [2021-12-06 19:01:04,954 INFO L226 Difference]: Without dead ends: 42612 [2021-12-06 19:01:04,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1000 GetRequests, 501 SyntacticMatches, 0 SemanticMatches, 499 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126541 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=43704, Invalid=206796, Unknown=0, NotChecked=0, Total=250500 [2021-12-06 19:01:04,974 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 1114 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 1648 mSolverCounterSat, 1268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1114 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 2916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1268 IncrementalHoareTripleChecker+Valid, 1648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-06 19:01:04,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1114 Valid, 23 Invalid, 2916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1268 Valid, 1648 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-06 19:01:05,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42612 states. [2021-12-06 19:01:08,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42612 to 10951. [2021-12-06 19:01:08,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10951 states, 10950 states have (on average 1.1557990867579908) internal successors, (12656), 10950 states have internal predecessors, (12656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:01:08,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10951 states to 10951 states and 12656 transitions. [2021-12-06 19:01:08,182 INFO L78 Accepts]: Start accepts. Automaton has 10951 states and 12656 transitions. Word has length 264 [2021-12-06 19:01:08,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:01:08,182 INFO L470 AbstractCegarLoop]: Abstraction has 10951 states and 12656 transitions. [2021-12-06 19:01:08,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 4.4222222222222225) internal successors, (199), 46 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:01:08,183 INFO L276 IsEmpty]: Start isEmpty. Operand 10951 states and 12656 transitions. [2021-12-06 19:01:08,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2021-12-06 19:01:08,192 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:01:08,192 INFO L514 BasicCegarLoop]: trace histogram [61, 60, 60, 23, 22, 22, 22, 1, 1, 1, 1] [2021-12-06 19:01:08,211 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-12-06 19:01:08,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:01:08,393 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-06 19:01:08,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:01:08,393 INFO L85 PathProgramCache]: Analyzing trace with hash -13351997, now seen corresponding path program 13 times [2021-12-06 19:01:08,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:01:08,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963009862] [2021-12-06 19:01:08,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:01:08,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:01:08,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:01:08,592 INFO L134 CoverageAnalysis]: Checked inductivity of 7718 backedges. 0 proven. 4043 refuted. 0 times theorem prover too weak. 3675 trivial. 0 not checked. [2021-12-06 19:01:08,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:01:08,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963009862] [2021-12-06 19:01:08,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963009862] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:01:08,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410356238] [2021-12-06 19:01:08,593 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 19:01:08,593 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:01:08,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:01:08,594 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:01:08,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-06 19:01:08,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:01:08,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-06 19:01:08,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:01:09,245 INFO L134 CoverageAnalysis]: Checked inductivity of 7718 backedges. 4022 proven. 977 refuted. 0 times theorem prover too weak. 2719 trivial. 0 not checked. [2021-12-06 19:01:09,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:01:09,666 INFO L134 CoverageAnalysis]: Checked inductivity of 7718 backedges. 3955 proven. 1044 refuted. 0 times theorem prover too weak. 2719 trivial. 0 not checked. [2021-12-06 19:01:09,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410356238] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:01:09,666 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:01:09,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 23, 23] total 58 [2021-12-06 19:01:09,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839810219] [2021-12-06 19:01:09,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:01:09,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2021-12-06 19:01:09,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:01:09,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-12-06 19:01:09,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=371, Invalid=2935, Unknown=0, NotChecked=0, Total=3306 [2021-12-06 19:01:09,669 INFO L87 Difference]: Start difference. First operand 10951 states and 12656 transitions. Second operand has 58 states, 58 states have (on average 4.931034482758621) internal successors, (286), 58 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:01:21,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:01:21,711 INFO L93 Difference]: Finished difference Result 16148 states and 18687 transitions. [2021-12-06 19:01:21,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 229 states. [2021-12-06 19:01:21,711 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 4.931034482758621) internal successors, (286), 58 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 274 [2021-12-06 19:01:21,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:01:21,723 INFO L225 Difference]: With dead ends: 16148 [2021-12-06 19:01:21,723 INFO L226 Difference]: Without dead ends: 14269 [2021-12-06 19:01:21,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 791 GetRequests, 510 SyntacticMatches, 1 SemanticMatches, 280 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28485 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=9105, Invalid=70137, Unknown=0, NotChecked=0, Total=79242 [2021-12-06 19:01:21,730 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 1595 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 3036 mSolverCounterSat, 1136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1595 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 4172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1136 IncrementalHoareTripleChecker+Valid, 3036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:01:21,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1595 Valid, 25 Invalid, 4172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1136 Valid, 3036 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-06 19:01:21,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14269 states. [2021-12-06 19:01:25,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14269 to 11633. [2021-12-06 19:01:25,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11633 states, 11632 states have (on average 1.1587001375515817) internal successors, (13478), 11632 states have internal predecessors, (13478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:01:25,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11633 states to 11633 states and 13478 transitions. [2021-12-06 19:01:25,193 INFO L78 Accepts]: Start accepts. Automaton has 11633 states and 13478 transitions. Word has length 274 [2021-12-06 19:01:25,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:01:25,194 INFO L470 AbstractCegarLoop]: Abstraction has 11633 states and 13478 transitions. [2021-12-06 19:01:25,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 4.931034482758621) internal successors, (286), 58 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:01:25,194 INFO L276 IsEmpty]: Start isEmpty. Operand 11633 states and 13478 transitions. [2021-12-06 19:01:25,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2021-12-06 19:01:25,203 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:01:25,203 INFO L514 BasicCegarLoop]: trace histogram [51, 50, 50, 34, 33, 33, 33, 1, 1, 1, 1] [2021-12-06 19:01:25,222 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-12-06 19:01:25,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:01:25,404 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-06 19:01:25,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:01:25,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1035485658, now seen corresponding path program 14 times [2021-12-06 19:01:25,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:01:25,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081338396] [2021-12-06 19:01:25,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:01:25,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:01:25,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:01:25,650 INFO L134 CoverageAnalysis]: Checked inductivity of 7603 backedges. 0 proven. 5555 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked. [2021-12-06 19:01:25,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:01:25,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081338396] [2021-12-06 19:01:25,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081338396] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:01:25,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252878533] [2021-12-06 19:01:25,651 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 19:01:25,651 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:01:25,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:01:25,652 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:01:25,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-06 19:01:25,715 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 19:01:25,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:01:25,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 39 conjunts are in the unsatisfiable core [2021-12-06 19:01:25,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:01:26,447 INFO L134 CoverageAnalysis]: Checked inductivity of 7603 backedges. 0 proven. 7510 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-12-06 19:01:26,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:01:27,458 INFO L134 CoverageAnalysis]: Checked inductivity of 7603 backedges. 1 proven. 7509 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-12-06 19:01:27,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252878533] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:01:27,459 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:01:27,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 39, 39] total 83 [2021-12-06 19:01:27,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656291280] [2021-12-06 19:01:27,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:01:27,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2021-12-06 19:01:27,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:01:27,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2021-12-06 19:01:27,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1750, Invalid=5222, Unknown=0, NotChecked=0, Total=6972 [2021-12-06 19:01:27,461 INFO L87 Difference]: Start difference. First operand 11633 states and 13478 transitions. Second operand has 84 states, 83 states have (on average 6.0843373493975905) internal successors, (505), 84 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:04:05,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:04:05,256 INFO L93 Difference]: Finished difference Result 178888 states and 211014 transitions. [2021-12-06 19:04:05,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1633 states. [2021-12-06 19:04:05,257 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 83 states have (on average 6.0843373493975905) internal successors, (505), 84 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 288 [2021-12-06 19:04:05,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:04:05,467 INFO L225 Difference]: With dead ends: 178888 [2021-12-06 19:04:05,467 INFO L226 Difference]: Without dead ends: 178887 [2021-12-06 19:04:05,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2210 GetRequests, 518 SyntacticMatches, 0 SemanticMatches, 1692 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1518526 ImplicationChecksByTransitivity, 79.6s TimeCoverageRelationStatistics Valid=514390, Invalid=2353552, Unknown=0, NotChecked=0, Total=2867942 [2021-12-06 19:04:05,651 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 2317 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 1552 mSolverCounterSat, 2466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2317 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 4018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2466 IncrementalHoareTripleChecker+Valid, 1552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-06 19:04:05,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2317 Valid, 31 Invalid, 4018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2466 Valid, 1552 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-06 19:04:05,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178887 states. [2021-12-06 19:04:45,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178887 to 58335. [2021-12-06 19:04:45,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58335 states, 58334 states have (on average 1.1392841224671717) internal successors, (66459), 58334 states have internal predecessors, (66459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:04:46,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58335 states to 58335 states and 66459 transitions. [2021-12-06 19:04:46,008 INFO L78 Accepts]: Start accepts. Automaton has 58335 states and 66459 transitions. Word has length 288 [2021-12-06 19:04:46,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:04:46,009 INFO L470 AbstractCegarLoop]: Abstraction has 58335 states and 66459 transitions. [2021-12-06 19:04:46,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 83 states have (on average 6.0843373493975905) internal successors, (505), 84 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:04:46,009 INFO L276 IsEmpty]: Start isEmpty. Operand 58335 states and 66459 transitions. [2021-12-06 19:04:46,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2021-12-06 19:04:46,052 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:04:46,052 INFO L514 BasicCegarLoop]: trace histogram [48, 47, 47, 47, 46, 46, 46, 1, 1, 1, 1] [2021-12-06 19:04:46,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-12-06 19:04:46,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:04:46,254 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-06 19:04:46,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:04:46,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1333495534, now seen corresponding path program 15 times [2021-12-06 19:04:46,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:04:46,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344398006] [2021-12-06 19:04:46,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:04:46,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:04:46,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:46,943 INFO L134 CoverageAnalysis]: Checked inductivity of 9731 backedges. 0 proven. 9685 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-12-06 19:04:46,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:04:46,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344398006] [2021-12-06 19:04:46,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344398006] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:04:46,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106307403] [2021-12-06 19:04:46,944 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 19:04:46,944 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:04:46,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:04:46,945 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:04:46,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-06 19:04:47,056 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 65 check-sat command(s) [2021-12-06 19:04:47,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:04:47,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 51 conjunts are in the unsatisfiable core [2021-12-06 19:04:47,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:04:47,393 INFO L134 CoverageAnalysis]: Checked inductivity of 9731 backedges. 0 proven. 9685 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-12-06 19:04:47,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:04:49,062 INFO L134 CoverageAnalysis]: Checked inductivity of 9731 backedges. 0 proven. 9685 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-12-06 19:04:49,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106307403] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:04:49,062 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:04:49,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 104 [2021-12-06 19:04:49,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175145279] [2021-12-06 19:04:49,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:04:49,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2021-12-06 19:04:49,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:04:49,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2021-12-06 19:04:49,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4686, Invalid=6234, Unknown=0, NotChecked=0, Total=10920 [2021-12-06 19:04:49,066 INFO L87 Difference]: Start difference. First operand 58335 states and 66459 transitions. Second operand has 105 states, 104 states have (on average 6.403846153846154) internal successors, (666), 105 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:07:59,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:07:59,577 INFO L93 Difference]: Finished difference Result 284034 states and 327686 transitions. [2021-12-06 19:07:59,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 838 states. [2021-12-06 19:07:59,578 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 104 states have (on average 6.403846153846154) internal successors, (666), 105 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 331 [2021-12-06 19:07:59,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:07:59,937 INFO L225 Difference]: With dead ends: 284034 [2021-12-06 19:07:59,937 INFO L226 Difference]: Without dead ends: 284033 [2021-12-06 19:08:00,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1450 GetRequests, 608 SyntacticMatches, 0 SemanticMatches, 842 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325764 ImplicationChecksByTransitivity, 31.2s TimeCoverageRelationStatistics Valid=165161, Invalid=546331, Unknown=0, NotChecked=0, Total=711492 [2021-12-06 19:08:00,029 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 3254 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 1227 mSolverCounterSat, 1996 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3254 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 3223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1996 IncrementalHoareTripleChecker+Valid, 1227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-06 19:08:00,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3254 Valid, 63 Invalid, 3223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1996 Valid, 1227 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-06 19:08:00,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284033 states. [2021-12-06 19:08:48,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284033 to 116168. [2021-12-06 19:08:48,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116168 states, 116167 states have (on average 1.1520225193041054) internal successors, (133827), 116167 states have internal predecessors, (133827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:08:48,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116168 states to 116168 states and 133827 transitions. [2021-12-06 19:08:48,358 INFO L78 Accepts]: Start accepts. Automaton has 116168 states and 133827 transitions. Word has length 331 [2021-12-06 19:08:48,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:08:48,358 INFO L470 AbstractCegarLoop]: Abstraction has 116168 states and 133827 transitions. [2021-12-06 19:08:48,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 104 states have (on average 6.403846153846154) internal successors, (666), 105 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:08:48,358 INFO L276 IsEmpty]: Start isEmpty. Operand 116168 states and 133827 transitions. [2021-12-06 19:08:48,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2021-12-06 19:08:48,423 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:08:48,424 INFO L514 BasicCegarLoop]: trace histogram [71, 70, 70, 54, 53, 53, 53, 1, 1, 1, 1] [2021-12-06 19:08:48,445 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-12-06 19:08:48,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:08:48,625 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-06 19:08:48,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:08:48,626 INFO L85 PathProgramCache]: Analyzing trace with hash -557111258, now seen corresponding path program 16 times [2021-12-06 19:08:48,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:08:48,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028318886] [2021-12-06 19:08:48,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:08:48,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:08:48,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:08:49,186 INFO L134 CoverageAnalysis]: Checked inductivity of 16713 backedges. 0 proven. 14645 refuted. 0 times theorem prover too weak. 2068 trivial. 0 not checked. [2021-12-06 19:08:49,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:08:49,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028318886] [2021-12-06 19:08:49,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028318886] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:08:49,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124655275] [2021-12-06 19:08:49,186 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 19:08:49,187 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:08:49,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:08:49,187 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:08:49,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cebeb8dd-0fe5-44e6-bd8e-270f8c44b5e3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-12-06 19:08:49,272 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 19:08:49,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:08:49,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 61 conjunts are in the unsatisfiable core [2021-12-06 19:08:49,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:08:51,224 INFO L134 CoverageAnalysis]: Checked inductivity of 16713 backedges. 6400 proven. 10201 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-12-06 19:08:51,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:08:52,918 INFO L134 CoverageAnalysis]: Checked inductivity of 16713 backedges. 6101 proven. 10500 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-12-06 19:08:52,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124655275] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:08:52,919 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:08:52,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 62, 62] total 151 [2021-12-06 19:08:52,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120086397] [2021-12-06 19:08:52,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:08:52,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 151 states [2021-12-06 19:08:52,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:08:52,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2021-12-06 19:08:52,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3618, Invalid=19032, Unknown=0, NotChecked=0, Total=22650 [2021-12-06 19:08:52,923 INFO L87 Difference]: Start difference. First operand 116168 states and 133827 transitions. Second operand has 151 states, 151 states have (on average 6.264900662251655) internal successors, (946), 151 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:10:47,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:10:47,039 INFO L93 Difference]: Finished difference Result 235892 states and 272860 transitions. [2021-12-06 19:10:47,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1259 states. [2021-12-06 19:10:47,040 INFO L78 Accepts]: Start accepts. Automaton has has 151 states, 151 states have (on average 6.264900662251655) internal successors, (946), 151 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 428 [2021-12-06 19:10:47,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:10:47,222 INFO L225 Difference]: With dead ends: 235892 [2021-12-06 19:10:47,222 INFO L226 Difference]: Without dead ends: 148993 [2021-12-06 19:10:47,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2154 GetRequests, 750 SyntacticMatches, 1 SemanticMatches, 1403 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 826472 ImplicationChecksByTransitivity, 54.2s TimeCoverageRelationStatistics Valid=122081, Invalid=1850539, Unknown=0, NotChecked=0, Total=1972620 [2021-12-06 19:10:47,376 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 8390 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 16858 mSolverCounterSat, 5520 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8390 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 22378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5520 IncrementalHoareTripleChecker+Valid, 16858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2021-12-06 19:10:47,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8390 Valid, 26 Invalid, 22378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5520 Valid, 16858 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2021-12-06 19:10:47,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148993 states.